Home / 28,240.13-38,973.20-15,664.88

Finding the Fourth Proportional to 28,240.13, 38,973.20 and 15,664.88

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Solution

The fourth proportional to 28,240.13, 38,973.20 and 15,664.88 is: 21,618.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.13 : 38,973.20 = 15,664.88 : x
  2. Step 2: Convert to fraction form
    28,240.13/38,973.20 = 15,664.88/x
  3. Step 3: Cross multiply
    28,240.13x = 38,973.20 × 15,664.88
  4. Step 4: Simplify right side
    28,240.13x = 610,510,228.03
  5. Step 5: Solve for x
    x = 610,510,228.03/28,240.13
  6. Step 6: Final answer
    x = 21,618.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.